// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

#include "utils/rand.h"
#include <random>

namespace dsn {
namespace rand {

thread_local std::ranlux48_base g_thread_local_rng(std::random_device{}());

/*extern*/ uint64_t next_u64(uint64_t min, uint64_t max)
{
    return std::uniform_int_distribution<uint64_t>(min, max)(g_thread_local_rng);
}

/*extern*/ void reseed_thread_local_rng(uint64_t seed) { g_thread_local_rng.seed(seed); }

} // namespace rand
} // namespace dsn
